Improved brick-machine



UNITEr STATES "ArENr Erre,"

JOSEPH GRANT, or PROVIDENCE, EHODE ISLAND, AssrGNOE To rrrMsEnr AND. HENRY fr. GEANT, OE sAME PLAGE.

llVlPROVED BRlCK-MACHEN.

Specification forming part of Letters Patent No. 52d5, dated January 23, 1866.

description thereof, which will enable others skilled in the art to m ake and use th e same, refer` ence being had to the accompanying drawings, forming part of this specification, in whichl Figure l represents a plan or top View of this invention. Fig. 2 is a longitudinal vertical section of the same, the line xx, Fig. 1, indicating the plane of section. Fig. 3 is a similar section of the driving-wheels, the plane of section -being indicated by the line j y, Fig. 1 Fig. 4 is a transverse vertical section ofthe same, taken in the plane indicated Similar letters parts.

This invention relates tocertain improvements in that class of machines for making bricks which are denominated rotary and locomotive brick-machines,72 and which are described in Letters Patent granted te meMay 13, 1851, and numbered 8,0%. In said machines the bricksareiormed bythe action of two cylinders set horizontally in a suitable framing and revolving in opposite directions, being driven by gearing which also propels the machine forward as the brick is bein gmade. One ot' these cylinders is tted with molds, 'the botbythe linerz z, Fig. 2. of reference indicate like I toms otl which form followers which are operated byrollers moving in fixed grooved channels, and by cams producing the drop motion. The second or pressing cylinder is provided with plates working and,iitting into the 4molds ot' the other-cylinder, pressing the clay, which is fed from a hopper above and between the two cylinders, the clay being drawn into the several molds by its own weight and the revolvin g motion othe cylinders, and the bricks deposited on the ground or surface prepared for them in regular layers or line as the ina-A chine moves forward. A roller in front clears or prepares the ground or surface on which the bricks are to lie.

The improvemei'rt which-constitutes the subject-matter ot' this present invention consists Vin arranging the rollers which transmit the vmotion ofthe grooved cams to the followers in different planes, one half or' the rollers being placed below the other half in such amanner that rollers of a larger diameter can be used 'than it' the rollers are all placed in one and the same plane, whereby the motion et' the followers is facilitated and the mechanism is less liable to wear and tear than it is with the original arrangement.

A A is the frame of the machine, and ,B the` hopper through which the clay is fed. The front part ot the machine is supported bya leveling-roller, C, which serves to clear or prepare the ground for the reception of the bricks, and the rear part of the machine rests on wheels l) D, which are fitted on the ends of tlle. moldc 'vlintler shatft c and turn witl'` it.

The mold-cylinder E' is iliade of iron or other suitable material, and has on its circumference or surface spaces 'd d d, forming molds. 1n these molds work the followers E, being iitted into the same se that they form their bottoms and move freely up and down, motion being given to them by the action of cam-grooves F on rollers f, which turn on spindles g, that extend lengthwise through the cylinder and pass through slots z' at both ends thereof, being connected to the followers E by lugs or ears k attached te said followers, as shown in Fig. 2 of the drawings. i

The cam-grooves F are tirmly secured to the fra-me A, and they are formed as l.shown in Fig. 3, one being fastened on eitherend of the cylinder. The rollers f, traveling in the. eamgrooves, cause vthe followers E to move in the molds d back, so as to admit the clay, andthen forward, so as to compress the clay, 'and finally to push out the ready-made brick.

lf the roller-sf are all placed in one and the same plane their diameters cannot be made any larger than the distance between the spindles g, and since this'distance is limited by the width or" the bricks the diameters ot' said rollers necessarily become so small that. they are liable to wear out very quick, and the wearand-tear ot' the machine is so great that-its operation is expensive and subjected to much expense for repairs. rlhis difieultyis 'obvlatcd by placingthe rollers f in diii'erent planes, as-

olea-rl y shown in Figs. 3 and 4 ofthe drawings, one halfA oi' the rollers being situated close to the inner surface of the cam-groove, and theother half close to the outer lsurface thereof, L groovesF in different planes, Substantially in said cam-groove vbeing; of such a,` depth thatv the manner and for the purpose described. room is obtained to place the rollers one above The above specification of my invention the other, as shown particularly in Fig. 4. signed by me this 10th day of October, 1865. 4By thisarrangement'Il am enabled tomake Y the diameter of vthe rollers fully tv'viee as large S 'as heretofore, and the machine runs compara- JOSEPHn-lk-GRANT' tively'easy andwith little Wear; i

Y What I claim as new, and desire to'seeure Witnesses:

by Letters Patent, is' HENRYT. GRANT,

Placing the rollers'fwhiohWork'iuthe 0amil 1` LIVINGSTON. 

